Common Stock (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Changes in Common Stock

Changes in common stock for each period are as follows:

	Year Ended December 31,
	2014				2013
	Shares		Amount		Shares			Amount
Common stock at the beginning of the period		34,048,366	$	406		35,635,357		$	396
Exercise of stock options		6,795		0		579,476			6
Exercise of warrants		1,307		0		448,281			4
Acquisitions of treasury stock		—		—		(2,614,748	)		—
Total common stock outstanding at the end of the period		34,056,468	$	406		34,048,366		$	406